A subway tunnel steel support temporary reinforcing transportation and installation integrated machine

Abstract

The utility model relates to the technical field of subway tunnel construction equipment, concretely relates to a subway tunnel steel support temporary reinforcing transportation installation integrated machine, the drive wheel corresponding to the subway track is equipped with below the transport trolley, four support columns are equipped with above the transport trolley, the lifting platform compatible with the transport trolley is equipped with above the support column, and the corner of lifting platform is equipped with the jacking element corresponding to the upper end of support column respectively, power device sets up on the transport trolley and is connected drive wheel correspondingly, the utility model integrates the track transportation, vertical jacking, positioning, installation auxiliary function in the same equipment, and the traditional operation mode is discarded, and the single equipment can complete the whole process operation of the steel support from the unloading point to the face transfer, positioning, jacking, alignment installation, reduces the number of equipment in the tunnel, avoids the space interference of multiple equipment, and greatly improves the operation adaptability of narrow space.

Description

Technical Field

[0001] This utility model belongs to the technical field of subway tunnel construction equipment, specifically relating to an integrated machine for the transportation and installation of temporary steel support for subway tunnels. Background Technology

[0002] During the shield excavation and initial support construction of subway tunnels, the surrounding rock geological conditions are complex, with a high proportion of soft soil, gravel, and other weak strata. After tunnel excavation, safety hazards such as surrounding rock convergence, arch settlement, and sidewall deformation are prone to occur. Therefore, it is essential to promptly erect portal steel supports for temporary reinforcement to ensure structural stability and operational safety during tunnel construction. Currently, the industry mostly employs a split-type equipment collaborative construction method for the transfer and installation of portal steel supports: first, the steel supports are transferred from the tunnel unloading point to the working face via a rail transport vehicle; then, with the help of small hoisting equipment inside the tunnel and manual assistance, the steel supports are aligned, lifted, and installed. The transfer and installation equipment are independent, resulting in long equipment arrival and relocation times. The narrow working space inside the tunnel and the potential for interference from multiple devices operating simultaneously further complicate the process. The steel supports require secondary hoisting and alignment after transfer, involving numerous manual interventions, resulting in low alignment accuracy and cumbersome installation procedures.

[0003] Therefore, there is a need to provide an improved technical solution that addresses the shortcomings of the existing technology. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the prior art. This utility model provides an integrated machine for the transportation and installation of temporary steel support for subway tunnels.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A transportation and installation integrated machine for temporary reinforcement of steel supports in subway tunnels includes: A transport trolley, wherein the transport trolley is equipped with drive wheels corresponding to the subway track below; Support columns: Four support columns are provided above the transport trolley. A lifting platform adapted to the transport trolley is provided above the support columns. The corners of the lifting platform are respectively provided with lifting components corresponding to the upper ends of the support columns. A power unit is mounted on the transport trolley and connected to the drive wheel. The lifting platform is square, and its width is adapted to the width between the two columns of the portal steel support. The upper surface of the lifting platform is flat and is used to support the cross braces of the portal steel support.

[0006] Preferably, the drive wheel is a hub motor, the power unit is a battery connected to the hub motor, and a controller connected to the hub motor is provided at the rear of the transport trolley.

[0007] Preferably, the transport trolley is provided with a telescopic platform that extends backward, and the bottom plate of the telescopic platform is provided with driven wheels corresponding to the subway track; The bottom of the transport trolley is provided with a sliding groove, and the telescopic platform is provided with a slide rail that slides along the sliding groove.

[0008] Preferably, the slide groove is provided with limiting members corresponding to the slide rail at both ends, the transport trolley is provided with positioning bolts corresponding to the telescopic platform, and the telescopic platform is provided with corresponding screw holes.

[0009] Preferably, the lifting platform is provided with at least two placement positions for corresponding portal steel supports, and the placement positions are two partitions spaced apart.

[0010] Preferably, the lifting platform is provided with a horizontal adjustment mechanism corresponding to each of the placement positions. The horizontal adjustment mechanism includes drive rods located on both sides of the placement position, and the drive rods abut against the uprights of the portal steel support.

[0011] Preferably, the bottom of the lifting platform is provided with a positioning column extending longitudinally, the positioning column and the support column are respectively corresponding to each other, and the support column is provided with a sliding sleeve corresponding to the positioning column.

[0012] Preferably, the lifting component is a hydraulic cylinder, with the bottom of the hydraulic cylinder fixed to the top of the support column, and the upper end of the hydraulic cylinder provided with a support plate corresponding to the lifting platform.

[0013] Beneficial effects: This utility model integrates rail transport, vertical lifting, positioning, and installation assistance functions into a single device, abandoning the traditional operation mode. A single device can complete the entire process of steel support transfer, positioning, lifting, and alignment installation from the unloading point to the tunnel face, reducing the number of devices required in the tunnel, avoiding spatial interference from multiple devices, and significantly improving the adaptability of operation in narrow spaces. It uses hub motors to directly drive the wheels, eliminating external transmission components, resulting in a simplified structure that is less prone to dust accumulation and jamming. The device is equipped with a closed-loop battery power supply, eliminating external power cables and preventing safety hazards such as cable wear, leakage, and tripping in the tunnel, significantly improving operational safety. Attached Figure Description

[0014] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. Wherein: Figure 1 This is a simplified structural diagram of the reinforced transport integrated machine provided in a specific embodiment of the present utility model.

[0015] In the diagram: 1. Transport trolley; 2. Drive wheel; 3. Telescopic platform; 4. Driven wheel; 5. Support column; 6. Lifting component; 7. Positioning column; 8. Lifting platform. Detailed Implementation

[0016] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art are within the protection scope of this utility model.

[0017] In the description of this utility model, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and do not require that this utility model be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. The terms "connected" and "linked" used in this utility model should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; they can refer to a direct connection or an indirect connection through intermediate components. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0018] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0019] like Figure 1As shown, a temporary reinforcement transportation and installation machine for subway tunnel steel supports is used to install portal steel supports, a common support structure for temporary tunnel reinforcement, consisting of two columns and a top cross brace. It includes a transport trolley 1, support columns 5, and a power unit. The transport trolley 1 serves as the equipment's load-bearing base, undertaking the functions of overall machine load-bearing, track movement, and component integration and installation. Drive wheels 2 corresponding to standard subway tracks are mounted below the transport trolley 1, precisely fitting the subway track tread to ensure the equipment moves along the track. Four support columns 5 are fixedly arranged in a rectangular array above the transport trolley 1, located at the four corners of the top surface of the transport trolley 1. A square lifting platform 8, adapted to the contour of the transport trolley 1, is installed above the support columns 5. Lifting components 6 are mounted at the four corners of the lifting platform 8 corresponding to the upper areas of the four support columns 5. The lifting platform 8 is vertically raised and lowered along the axis of the support columns 5 by the extension and retraction of the lifting components 6, achieving height adjustment. The power unit is fixedly installed inside the frame of the transport trolley 1. The power unit is electrically or transmissionally connected to the drive wheel 2, providing power input for all movements of the machine, including walking, lifting, and leveling. The lifting platform 8 is designed as a square plate structure, with its lateral width matching the clear distance between the two columns of the portal steel support. It can be directly embedded into the inside of the portal steel support to form a support. The upper surface of the lifting platform 8 is machined into a high-precision flat bearing surface without any protrusions or grooves, which can stably fit the cross bracing members supporting the portal steel support and prevent the steel support from deforming under stress.

[0020] In this embodiment, the drive wheel 2 is preferably a hub motor (referencing an electric vehicle hub motor). The hub motor is externally equipped with an annular support ring corresponding to the rail. The power unit uses a battery pack, which is encapsulated in a sealed box inside the frame of the transport trolley 1. The battery is electrically connected to each hub motor via cables to achieve cableless power supply. The rear of the transport trolley 1 is equipped with a controller, which has built-in walking speed regulation, braking, and lifting linkage control programs. It is electrically connected to each hub motor, enabling the equipment to move forward, backward, steplessly regulate speed, brake at fixed points, and start / stop control.

[0021] The bottom of the transport trolley 1 is equipped with a telescopic platform 3 that can extend backward. The telescopic platform 3 provides a standing platform for operators, forming a construction support platform, while reducing the space occupied by the device. The telescopic platform 3 adopts an embedded storage structure, which fits against the bottom surface of the transport trolley 1 when fully retracted, without occupying additional passage space. The bottom surface of the telescopic platform 3 is equipped with driven wheels 4 that match the subway track. The driven wheels 4 are non-powered follow-up structures that fit against the track on the same plane as the drive wheels 2, increasing the number of support points for the equipment and improving the structural stability when traveling under heavy load.

[0022] The bottom of the transport trolley 1 is provided with a closed slide groove along the front-to-back direction. The top surface of the telescopic platform 3 is fixed with a slide rail that matches the slide groove. The telescopic platform 3 can be smoothly guided to extend and retract through the embedded sliding cooperation between the slide rail and the slide groove.

[0023] Furthermore, limit components are installed at both ends of the slide rail. The limit components adopt an elastic stop structure, which can limit the maximum extension stroke and the maximum retraction stroke of the slide rail, and prevent the telescopic platform 3 from slipping or over-traveling. The bottom of the frame of the transport trolley 1 is provided with threaded holes and equipped with positioning bolts. Multiple sets of matching threaded holes are opened at intervals along the extension direction on the side wall of the telescopic platform 3. When the telescopic platform 3 is adjusted to the specified extension length, it is locked and fixed by the positioning bolts through the threaded holes, thus locking the working length of the telescopic platform 3 to meet different operation and load-bearing requirements.

[0024] In another optional embodiment, the upper surface of the lifting platform 8 is provided with not less than two placement positions for positioning the portal steel support. Each placement position is distributed at intervals along the length of the lifting platform 8. Each placement position consists of two vertically parallel partitions. The distance between the two partitions matches the thickness of the portal steel support column, forming a limiting slot, which can limit the portal steel support and prevent the steel support from shifting laterally during transportation and lifting.

[0025] Furthermore, the lifting platform 8 is equipped with a horizontal adjustment mechanism corresponding to each placement station. Each horizontal adjustment mechanism includes drive rods located on the left and right sides of the corresponding placement station. The drive rods adopt electric push rods or hydraulic cylinder structures and are arranged horizontally. Their telescopic ends face the center of the placement station and can directly contact the side wall of the push-pull gate steel support column. The position of the gate steel support can be finely adjusted by the drive rods on both sides to achieve precise centering and leveling of the steel support.

[0026] The bottom surface of the lifting platform 8 is fixed with positioning columns 7 extending longitudinally along the equipment. The positioning columns 7 correspond one-to-one with the four support columns 5 above. The upper side of the support column 5 is fixedly equipped with a sliding sleeve. The sliding sleeve is in clearance fit with the positioning column 7. The positioning column 7 can slide axially along the inner wall of the sliding sleeve to form a guide structure, restrict the horizontal displacement of the lifting platform 8, and prevent the platform from twisting or shifting during the lifting process.

[0027] Furthermore, the lifting component 6 adopts a hydraulic cylinder. The bottom of the cylinder body is fixed to the top end face of the support column 5 by flange bolts. A circular support plate is fixedly connected to the upper end of the piston rod of the cylinder. The support plate is made of anti-slip and wear-resistant steel plate and is in rigid contact with the bottom surface of the lifting platform 8. The lifting platform 8 is smoothly raised and lowered by the synchronous extension and retraction of four cylinders. The hydraulic drive has a large load-bearing capacity and smooth operation, which is suitable for the lifting operation requirements of heavy steel support.

[0028] In this embodiment, a hydraulic station corresponding to the oil cylinder is provided on the transport trolley 1.

[0029] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be within the scope of protection of the pending claims of the present utility model.

Claims

1. A transportation and installation integrated machine for temporary reinforcement of steel supports in subway tunnels, characterized in that, include: A transport trolley, wherein the transport trolley is equipped with drive wheels corresponding to the subway track below; Support columns: Four support columns are provided above the transport trolley. A lifting platform adapted to the transport trolley is provided above the support columns. The corners of the lifting platform are respectively provided with lifting components corresponding to the upper ends of the support columns. A power unit is mounted on the transport trolley and connected to the drive wheel. The lifting platform is square, and its width is adapted to the width between the two columns of the portal steel support. The upper surface of the lifting platform is flat and is used to support the cross braces of the portal steel support.

2. The integrated machine for temporary reinforcement, transportation, and installation of steel supports for subway tunnels according to claim 1, characterized in that, The drive wheel is a hub motor, the power unit is a battery connected to the hub motor, and a controller connected to the hub motor is provided at the rear of the transport trolley.

3. The integrated machine for temporary reinforcement, transportation, and installation of steel supports for subway tunnels according to claim 1, characterized in that, The transport trolley is equipped with a telescopic platform that extends backward, and the bottom plate of the telescopic platform is equipped with driven wheels corresponding to the subway track. The bottom of the transport trolley is provided with a sliding groove, and the telescopic platform is provided with a slide rail that slides along the sliding groove.

4. The integrated machine for temporary reinforcement, transportation, and installation of steel supports for subway tunnels according to claim 3, characterized in that, The chute is provided with limiting components corresponding to the slide rail at both ends, the transport trolley is provided with positioning bolts corresponding to the telescopic platform, and the telescopic platform is provided with corresponding screw holes.

5. The integrated machine for temporary reinforcement, transportation, and installation of steel supports for subway tunnels according to claim 1, characterized in that, The lifting platform is provided with at least two placement positions for corresponding portal steel supports, and the placement positions are two partitions spaced apart.

6. The integrated machine for temporary reinforcement, transportation, and installation of steel supports for subway tunnels according to claim 5, characterized in that, The lifting platform is equipped with a horizontal adjustment mechanism that corresponds to each of the placement stations. The horizontal adjustment mechanism includes drive rods located on both sides of the placement station, and the drive rods abut against the uprights of the portal steel support.

7. The integrated machine for temporary reinforcement, transportation, and installation of steel supports for subway tunnels according to claim 1, characterized in that, The bottom of the lifting platform is provided with positioning columns extending longitudinally, and each positioning column corresponds to a support column. A sliding sleeve corresponding to the positioning column is provided on the side of the support column.

8. The integrated machine for temporary reinforcement, transportation, and installation of steel supports for subway tunnels according to claim 6, characterized in that, The lifting component is a hydraulic cylinder, with the bottom of the cylinder fixed to the top of the support column, and the upper end of the cylinder having a support plate corresponding to the lifting platform.

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